Solved! Air Channels in Manhattan

[Thomas Grant]

Have indoor antenna in Manhattan--good enough for most Air Channels, but suddenly lost Ch 2(CBS) as Ch 42(Evangelical) came on instead, & can't get rid of it. Another, larger indoor antenna help? Tgrant@hartford.edu

 

[soundguruman]

you are probably receiving bleed over from another RF source in the building. It is interfering with your weak signal of channel 2.
A bigger antenna will just make the problem worse.